The Probability of Murder — Ada Madison

Dr. Sophie Knowles is a professor with a way of making even the most complex math problems fun for her students. But now she's faced with a killer problem that will test her powers of logic and deduction...

Sophie's weekly parties celebrating famous mathematicians and scientists are a big hit on campus. She's enjoying the latest soiree with her students and dreaming of her upcoming getaway with her boyfriend, medevac pilot Bruce Granville, when suddenly everyone's cell phones start ringing at once. Turns out someone is being taken out of the Emily Dickinson Library on campus -- in an ambulance.

It's Charlotte Crocker, the librarian and a good friend of Sophie. Charlotte was found dead in front of one of the library stacks. She was loved by everyone, but the detective in charge of the investigation hints that there may have been more to Charlotte than most people knew. Now Sophie must take on some rigorous deduction homework and formulate her own equation about what happened to her friend -- before the chances for another murder on campus increase exponentially...